/Engine/Plugins/Experimental/GeometryScripting/Source/GeometryScriptingCore/Public/GeometryScript/MeshNormalsFunctions.h
If recomputing Tangents for use with a DynamicMeshComponent, it is also necessary to set the Tangents Type on the Component to "Externally Provided"
static [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * ComputeTangents ( [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * TargetMesh, [FGeometryScriptTangentsOptions](API\Plugins\GeometryScriptingCore\GeometryScript\FGeometryScriptTangentsOptions) Options, [UGeometryScriptDebug](API\Plugins\GeometryScriptingCore\GeometryScript\UGeometryScriptDebug) * Debug )